win(3FORM) win(3FORM)
NAME
form_win - make and break form window and subwindow associations
SYNOPSIS
#include <form.h>
int set_form_win(FORM *form, WINDOW *win);
WINDOW *form_win(const FORM *form);
int set_form_sub(FORM *form, WINDOW *sub);
WINDOW *form_sub(const FORM *form);
int scale_form(const FORM *form, int *rows, int *columns);
DESCRIPTION
Every form has an associated pair of curses windows. The form window
displays any title and border associated with the window; the form sub-
window displays the items of the form that are currently available for
selection.
The first four functions get and set those windows. It is not neces-
sary to set either window; by default, the driver code uses stdscr for
both.
In the set_ functions, window argument of NULL is treated as though it
were stsdcr. A form argument of NULL is treated as a request to change
the system default form window or subwindow.
The function scale_form returns the minimum size required for the sub-
window of form.
RETURN VALUE
Routines that return pointers return NULL on error. Routines that re-
turn an integer return one of the following error codes:
E_OK The routine succeeded.
E_SYSTEM_ERROR
System error occurred (see errno(3)).
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
E_POSTED
The form has already been posted.
E_NOT_CONNECTED
No items are connected to the form.
SEE ALSO
ncurses(3NCURSES), curses_variables(3NCURSES), form(3FORM).
NOTES
The header file <form.h> automatically includes the header file
<curses.h>.
PORTABILITY
These routines emulate the System V forms library. They were not sup-
ported on Version 7 or BSD versions.
AUTHORS
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.
Raymond.
win(3FORM)
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